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Cognomen Керин (Karyn , Kerin , Keryn ) , across the world, is quite a common family name. The last name Керин is characteristic of Slovenia, where it is quite a common surname, Honduras, and Ireland, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Honduras, the United States, and Australia. More frequently, Керин is the forename as well as the last name.